Fibrous mannardite crystals are observed in three colorless quartz samples.

Spiral patterns of nacre platelets observed on the surface of a non-bead cultured pearl are reminiscent of fingerprints.

Colorful thin film inclusions are captured within a Russian emerald carving.

Dense tube inclusions in emerald create a scene reminiscent of a tranquil bamboo forest.

A semi-baroque saltwater nacreous pearl presents identification challenges in the Mumbai laboratory.

The Carlsbad laboratory reports on a rare submission of orangy red translucent friedelite.

The Mumbai laboratory reports on a jewelry submission containing fracture-filled diamonds.

A large faceted cuprite is examined at the Carlsbad laboratory.

An undrilled black bead is identified as an assembled imitation pearl made from shell fragments.

The date and topic of the 2026 Sinkankas Symposium is announced.

A snuff bottle submitted to TULAB as jadeite jade is identified as a dolomite aggregate with fuchsite.

A summary of presentations from 24 industry-leading experts at Converge.

An aquamarine crystal from Pakistan contains a pseudomorphic quartz inclusion.

Reports on a new source of primary gem-quality sapphire from Montana, comparing its inclusions and trace element chemistry with those from secondary sources in the state.

GIAは2026年1月1日、デザインを一新したカラーストーンレポートと新サービスを開始します。

GIA will launch redesigned colored stones reports and new services on January 1, 2026.

An overview of the Fall 2025 Gems & Gemology content.

Summarizes the features of 480 nm band diamonds, including chameleon diamonds and those with unmodified orange hues, for rapid identification or advanced gemological testing.